The second block is the Dark Mark and a potions bottle.
“…You-Know-Who and his followers sent the Dark Mark into the air whenever they killed. The terror it inspired…you have no idea, you’re too young. Just picture coming home and finding the Dark Mark hovering over your house, and knowing what you’re about to find inside… Everyone’s worst fear…the very worst.“—Arthur Weasley
Click on the pictures to go through to the pattern links, they are all free.